How to extract the content from InDesign?

The first thing you need to do is express clearly what you're trying to achieve.

I gather that English is not your first language, so that might be part of the problem, but what exactly do you mean by:

"extract the text"?

Do you want to export an RTF file? A tagged text file? Or are you looking to get some text into your script so you can do something to it or respond to it in some way?

Similarly, what does "based on the style I used in InDesign file" mean?

Do you want to preserve the style in your extracted text for use elsewhere? Or are you trying to extract only the text in a certain paragraph style?

Have you any experience of scripting anything in js or vb?

Dave

Yes, it is feasible, but it needs to be more precisely specified to understand exactly what you want.

WIth a script, you can walk through the paragraphs of a story checking the paragraph styles applied, or you can use Find/Change to locate all the text in a particular style.

Have you ever scripted InDesign to do anything?

Dave